Overview

Comprehensive Description

Description

Prostomium blunt, anteriorly truncate or rounded, anterior margin bifid, with anterior margin indented. Lateral horns absent. Caruncle present. Occipital antenna present. Nuchal organ short, at most one segment long. Eyes present; 4 eyes. Palps simple, lacking basal sheath. Dorsal ridge connecting bases of branchiae on chaetiger 1 absent. Prominent dorsal collar on setiger 2 absent. Dorsal branchiae present, first present on chaetiger 7. Dorsal branchiae absent from many median and posterior chaetigers, last present on chaetiger 12. Dorsal branchiae continuous. Dorsal branchiae partially or wholly fused with notopodial lamellae (on some or all chaetigers), all simple. First branchiae without process at base on anterior face. Accessory branchiae arising from posterior part of notopodium absent. Ventral branchiae absent. Chaetiger 3 without filament at base of branchiae. Dorsal crests absent. Ventral crests absent. Chaetiger 1 notopodium present. Chaetiger 1 notochaetae present. Neuropodial lobe of chaetiger 2 rounded, approximately symmetrical. Neuropodial lobes of posterior chaetigers a single lobe. Interparapodial pouches absent. Chaetigers 2–4 similar, not strongly differentiated. Chaetiger 5 unmodified, similar to subsequent chaetigers. Posterior modified notochaetae absent. Notopodial hooded hooks absent. Neurochaetae of chaetiger 1 simple capillaries similar to those of subsequent chaetigers. Neuropodial hooded hooks present, first present on chaetiger 18–20. Neuropodial hooded hooks with accessory tooth below the main fang, 1 accessory tooth (bidentate). Shaft of neuropodial hooded hooks of constant thickness, lacking a constriction. Neuropodial sabre chaetae absent. Neuropodial spines present, aristate (on chaetigers 4 & 5 only). Embedded bunches of notopodial needle chaetae absent. Pygidium surrounded by a ring of filiform anal cirri.

Description generated from: Wilson, RS & McDiarmid, H 2013. Spionidae (Polychaeta)- A DELTA database of genera, and Australian species. Version 2; originally published as In RS Wilson, PA Hutchings & CJ Glasby (eds) Polychaetes: An Interactive Identification Guide. CSIRO Publishing, Melbourne.

Additional references:
Mackie, ASY and Duff, AA. 1986. Atherospio disticha gen. et sp. nov. (Polychaeta: Spionidae) from Loch Tuirnaig, west coast of Scotland. Ophelia 25, 139-146.

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© Wilson, Robin

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Distribution

Distribution within Australia: Not known from Australia.

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© Wilson, Robin

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Ecology

Habitat

Insufficient data.

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Depth range based on 39 specimens in 3 taxa.
Water temperature and chemistry ranges based on 25 samples.

Environmental ranges
  Depth range (m): 27 - 43.4
  Temperature range (°C): 8.393 - 10.000
  Nitrate (umol/L): 2.055 - 3.189
  Salinity (PPS): 34.402 - 34.664
  Oxygen (ml/l): 5.996 - 6.234
  Phosphate (umol/l): 0.409 - 0.444
  Silicate (umol/l): 2.590 - 2.859

Graphical representation

Depth range (m): 27 - 43.4

Temperature range (°C): 8.393 - 10.000

Nitrate (umol/L): 2.055 - 3.189

Salinity (PPS): 34.402 - 34.664

Oxygen (ml/l): 5.996 - 6.234

Phosphate (umol/l): 0.409 - 0.444

Silicate (umol/l): 2.590 - 2.859
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:3Public Records:0
Specimens with Sequences:1Public Species:0
Specimens with Barcodes:1Public BINs:0
Species:1         
Species With Barcodes:1         
          
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Source: Barcode of Life Data Systems (BOLD)

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